Pius XI, P. (1954). Encyclical letter (Quadragesimo anno) of His Holiness Pope Pius XI, on reconstructing the social order and perfecting it conformably to the precepts of the gospel, in commemoration of the fortieth anniversary of the enclyclical "Rerum novarum.". Oxford.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিPius XI, Pope. Encyclical Letter (Quadragesimo Anno) of His Holiness Pope Pius XI, on Reconstructing the Social Order and Perfecting It Conformably to the Precepts of the Gospel, in Commemoration of the Fortieth Anniversary of the Enclyclical "Rerum Novarum.". Oxford, 1954.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিPius XI, Pope. Encyclical Letter (Quadragesimo Anno) of His Holiness Pope Pius XI, on Reconstructing the Social Order and Perfecting It Conformably to the Precepts of the Gospel, in Commemoration of the Fortieth Anniversary of the Enclyclical "Rerum Novarum.". Oxford, 1954.